Furnace door airtight structure of high-temperature heating furnace

Abstract

The utility model relates to the technical field of high-temperature heating furnaces, in particular to a furnace door airtight structure of a high-temperature heating furnace. The furnace door airtight structure of the high-temperature heating furnace comprises a high-temperature furnace body, the high-temperature furnace body is provided with a furnace cavity, and a furnace door plate used for sealing the furnace cavity is rotationally installed on the high-temperature furnace body; the controller is mounted on one side of the high-temperature furnace body; the first sealing piece is installed on the furnace door plate, a plurality of outer protrusions are arranged on the edge of the outer side of the first sealing piece, and a plurality of inner grooves are formed in the inner side of the first sealing piece; a second sealing piece and a second sealing piece which is in contact and close fit with the first sealing piece are installed on the front side end face of the furnace cavity, an outer groove matched with the outer protrusion in an inserted mode is formed in the edge of the outer side of the second sealing piece, and an inner protrusion matched with the inner groove in an inserted mode is arranged on the inner side of the second sealing piece; the inner frame assembly is mounted on the furnace door plate; and the number of the lock catch assemblies is two, and the two lock catch assemblies are installed on one side of the high-temperature furnace body. The furnace door airtight structure of the high-temperature heating furnace has the advantage of being good in airtightness.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature heating furnaces, in particular to an airtight structure of a furnace door of a high-temperature heating furnace. Background Art

[0002] High temperature furnace, also called muffle furnace, is a national standard energy-saving cycle operation electric furnace. Muffle furnace is mainly used for heat treatment such as normalizing, quenching, annealing, etc. of alloy steel products and various metal parts, or high temperature sintering of cutting blades such as diamond. It is generally composed of furnace body, furnace lining, electric heating device, temperature control and furnace door.

[0003] Among them, the airtightness of the furnace door that seals the furnace body heating chamber has a great influence on the heating effect and energy consumption of the high-temperature furnace. The sealing effect of the traditional furnace door is average, and it is easy to leak, causing a large amount of hot air loss and increasing energy consumption.

[0004] Therefore, it is necessary to provide a new airtight structure of a furnace door of a high-temperature heating furnace to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an airtight structure of a furnace door of a high-temperature heating furnace with good airtightness.

[0006] The airtight structure of the furnace door of the high-temperature heating furnace provided by the utility model comprises: a high-temperature furnace body, the high-temperature furnace body is provided with a furnace cavity, and a furnace door plate for sealing the furnace cavity is rotatably mounted on the high-temperature furnace body;

[0007] A controller, installed on one side of the high-temperature furnace body;

[0008] A sealing sheet 1 is installed on the furnace door plate, and a plurality of outer protrusions are provided on the outer edge of the sealing sheet 1, and a plurality of inner grooves are provided on the inner side of the sealing sheet 1;

[0009] Sealing sheet 2, the sealing sheet 2 being in close contact with the sealing sheet 1 and installed on the front end surface of the furnace chamber, and the outer edge of the sealing sheet 2 is provided with an outer groove plug-fitted with the outer protrusion, and the inner side of the sealing sheet 2 is provided with an inner protrusion plug-fitted with the inner groove;

[0010] An inner frame assembly is mounted on the furnace door panel;

[0011] There are two lock catch assemblies, which are installed on one side of the high-temperature furnace body, and the furnace door plate is provided with lock grooves that cooperate with the two lock catch assemblies.

[0012] Preferably, the inner frame assembly includes an electric telescopic rod, and four of the electric telescopic rods are installed at the four corners of the furnace door panel and are electrically connected to the controller, and the telescopic ends of the four electric telescopic rods are fixedly installed with connecting pieces, and a blocking block is installed on the connecting piece. The blocking block passes through a through groove provided in the furnace door panel and slides with the furnace cavity, and the end face of the blocking block extending into the furnace cavity is provided with a heat insulation layer.

[0013] Preferably, a sealing sheet three is embedded in the outer side wall of one end of the blocking block extending into the furnace cavity.

[0014] Preferably, a sealing sheet four is embedded in the through groove formed in the furnace door panel.

[0015] Preferably, the locking assembly includes an electric telescopic rod 2, which is installed on the other side of the high-temperature furnace body and electrically connected to the controller, and the telescopic end of the electric telescopic rod 2 is fixedly installed with a plug plate for passing through a lock slot, and a T-shaped plate is symmetrically installed on the plug plate, and a bidirectional threaded rod is rotatably installed on the T-shaped plate, and a locking block is symmetrically threaded on the bidirectional threaded rod, and the locking block is provided with a T-shaped slot that slides with the T-shaped plate.

[0016] Preferably, a servo motor is installed on the plug board, the servo motor is transmission-connected to the bidirectional threaded rod via gears, and the servo motor is electrically connected to the controller.

[0017] Compared with the related art, the airtight structure of the furnace door of the high-temperature heating furnace provided by the utility model has the following beneficial effects:

[0018] 1. The utility model provides an airtight structure of a furnace door of a high-temperature heating furnace, by arranging a sealing sheet 1 on the furnace door plate, arranging a sealing sheet 2 on the high-temperature furnace body, and using the outer protrusion and inner groove of the sealing sheet 1 to cooperate with the inner protrusion and outer groove of the sealing sheet 2, when the furnace door plate is closed and locked by the lock assembly, the furnace cavity is sealed, and the overall airtightness is good;

[0019] 2. By setting an inner frame assembly on the furnace door panel, the inner frame assembly cooperates with the electric telescopic rod, the connecting piece, the blocking block, the insulation layer and the sealing piece to further seal the furnace cavity and improve the air tightness. By setting the insulation layer, the heat conduction is reduced and the temperature of the furnace door is lowered, which facilitates the opening of the furnace door at a later time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of a preferred embodiment of the airtight structure of the furnace door of the high-temperature heating furnace provided by the utility model;

[0021] Figure 2 A structural schematic diagram of the airtight structure of the furnace door of the high-temperature heating furnace provided by the utility model from another perspective;

[0022] Figure 3 A schematic diagram of the structure of the furnace door of the high-temperature heating furnace provided by the utility model when the furnace door is closed;

[0023] Figure 4 A schematic diagram of the structure of the lock assembly provided by the utility model;

[0024] Figure 5 for Figure 1 A partial enlarged view of A shown.

[0025] Numbers in the figure: 1. high-temperature furnace body; 101. furnace chamber; 2. furnace door panel; 21. sealing piece four; 201. locking groove; 3. sealing piece one; 31. outer protrusion; 301. inner groove; 4. sealing piece two; 41. inner protrusion; 401. outer groove; 5. inner frame assembly; 51. electric telescopic rod one; 52. connecting piece; 53. blocking block; 54. thermal insulation layer; 55. sealing piece three; 6. locking assembly; 61. electric telescopic rod two; 62. plug-in plate; 63. T-plate; 64. bidirectional threaded rod; 65. locking block; 66. servo motor; 7. controller. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0028] See also Figures 1 to 5 The utility model provides an airtight structure for a furnace door of a high-temperature heating furnace. The airtight structure for the furnace door of the high-temperature heating furnace comprises:

[0029] A high temperature furnace body 1, wherein the high temperature furnace body 1 is provided with a furnace cavity 101, and a furnace door plate 2 for sealing the furnace cavity 101 is rotatably mounted on the high temperature furnace body 1;

[0030] A controller 7 is installed on one side of the high temperature furnace body 1;

[0031] The sealing sheet 3 is installed on the furnace door plate 2, and the outer edge of the sealing sheet 3 is provided with a plurality of outer protrusions 31, and the inner side of the sealing sheet 3 is provided with a plurality of inner grooves 301;

[0032] The sealing sheet 2 4, which is in close contact with the sealing sheet 1 3, is installed on the front end surface of the furnace chamber 101, and the outer edge of the sealing sheet 2 4 is provided with an outer groove 401 plugged with the outer protrusion 31, and the inner side of the sealing sheet 2 4 is provided with an inner protrusion 41 plugged with the inner groove 301;

[0033] The inner frame assembly 5 is mounted on the furnace door panel 2;

[0034] There are two lock catch assemblies 6 , which are installed on one side of the high-temperature furnace body 1 , and a lock groove 201 matching with the two lock catch assemblies 6 is opened on the furnace door panel 2 .

[0035] It should be noted that the airtight structure of the entire furnace door is such that when the furnace door panel 2 is closed, the outer protrusion 31 of the sealing piece 1 3 is inserted into the outer groove 401 of the sealing piece 2 4, and at the same time, the inner protrusion 41 of the sealing piece 2 4 is inserted into the inner groove 301, so that after the locking assembly 6 is inserted into the locking groove 201, the furnace door panel 2 is tightly locked on the high-temperature furnace body 1, so that the sealing piece 1 3 and the sealing piece 2 4 are pressed together, and the overall sealing is high. After closing, the inner frame assembly 5 further seals the furnace cavity 101 to improve the overall airtightness.

[0036] In the embodiments of the present invention, please refer to Figures 1 to 5 The inner frame assembly 5 includes an electric telescopic rod 51, and four electric telescopic rods 51 are installed at the four corners of the furnace door panel 2 and are electrically connected to the controller 7. The telescopic ends of the four electric telescopic rods 51 are fixedly installed with connecting pieces 52, and the connecting pieces 52 are installed with blocking blocks 53. The blocking blocks 53 pass through the through grooves provided in the furnace door panel 2 and slide with the furnace cavity 101, and the end surface of the end of the blocking block 53 extending into the furnace cavity 101 is provided with a heat insulation layer 54;

[0037] Among them, a sealing piece 3 55 is embedded in the outer side wall of one end of the blocking block 53 extending into the furnace chamber 101, and a sealing piece 4 21 is embedded in the through groove provided in the furnace door panel 2.

[0038] It should be noted that when the inner frame assembly 5 is in use, when the furnace door panel 2 is tightly closed, the electric telescopic rod 1 51 is controlled to contract to drive the connecting piece 52 to move toward the furnace door panel 2, so that the connecting piece 52 drives the blocking block 53 to move and insert into the furnace cavity 101, and then the sealing piece 3 55 and the sealing piece 4 21 are used to seal the gap, thereby further improving the sealing of the furnace door and improving the air tightness. When inserting again, the heat insulation layer 54 can be provided to reduce heat conduction, thereby reducing the temperature of the furnace door panel 2, which is convenient for opening later;

[0039] It should also be noted that when the furnace door needs to be opened, the electric telescopic rod 51 is first controlled to extend, and the blocking block 53 is driven to withdraw from the furnace cavity 101 through the connecting piece 52, so that the furnace door panel 2 can be rotated to open.

[0040] In the embodiments of the present invention, please refer to Figures 1 to 5The lock assembly 6 includes an electric telescopic rod 61, which is installed on the other side of the high-temperature furnace body 1 and electrically connected to the controller 7, and a plug plate 62 for passing through the lock slot 201 is fixedly installed at the telescopic end of the electric telescopic rod 61, and a T-shaped plate 63 is symmetrically installed on the plug plate 62, and a bidirectional threaded rod 64 is rotatably installed on the T-shaped plate 63, and a locking block 65 is symmetrically threaded on the bidirectional threaded rod 64, and the locking block 65 is provided with a T-shaped slot that slides with the T-shaped plate 63;

[0041] It should be noted that when the lock assembly 6 is used, when the furnace door panel 2 is rotated and closed, the electric telescopic rod 61 is first controlled to drive the plug plate 62 to pass through the lock groove 201. After passing through, the two-way threaded rod 64 is rotated to drive the two locking blocks 65 to slide along the T-shaped plate 63 until the distance between them is greater than the length of the lock groove 201. Then, the electric telescopic rod 61 is controlled to shrink, so that the furnace door panel 2 is pulled tightly to the high-temperature furnace body 1 through the locking blocks 65 to achieve locking. When it needs to be opened, the two-way threaded rod 64 is rotated in the opposite direction to drive the locking blocks 65 to reset.

[0042] It should also be noted that the width of the locking block 65 is smaller than the width of the locking slot 201 , so that the locking block 65 can pass through the locking slot 201 after resetting, thereby facilitating the opening of the furnace door panel 2 .

[0043] In the present embodiment, a servo motor 66 is installed on the plug board 62, and the servo motor 66 is connected to the bidirectional threaded rod 64 through gears. The servo motor 66 is electrically connected to the controller 7. In this way, the servo motor 66 is controlled by the controller 7 to drive the bidirectional threaded rod 64, which can reduce the need to rotate the bidirectional threaded rod 64 by hand, avoid direct contact, and avoid high temperature burns.

[0044] The working principle of the airtight structure of the furnace door of the high-temperature heating furnace provided by the utility model is as follows:

[0045] The airtight structure of the entire furnace door is that when the furnace door panel 2 is closed, the outer protrusion 31 of the sealing sheet 1 3 is inserted into the outer groove 401 of the sealing sheet 2 4, and the inner protrusion 41 of the sealing sheet 2 4 is inserted into the inner groove 301, so that after the lock assembly 6 is inserted into the lock groove 201, the furnace door panel 2 is tightly locked on the high-temperature furnace body 1, so that the sealing sheet 1 3 and the sealing sheet 2 4 are pressed together, and the overall sealing performance is high. After closing, the inner frame assembly 5 further seals the furnace cavity 101 to improve the overall airtightness and lock. When the buckle assembly 6 is in use, when the furnace door panel 2 is rotated and closed, the electric telescopic rod 2 61 is first controlled to drive the plug plate 62 to pass through the lock slot 201. After passing through, the two-way threaded rod 64 is rotated to drive the two locking blocks 65 to slide along the T-shaped plate 63 until the distance between them is greater than the length of the lock slot 201. Then the electric telescopic rod 2 61 is controlled to shrink, so that the furnace door panel 2 is pulled tightly onto the high-temperature furnace body 1 through the locking blocks 65 to achieve locking. When it needs to be opened, the two-way threaded rod 64 is rotated in the opposite direction to drive the locking blocks 65 to reset.

[0046] When the inner frame assembly 5 is in use, when the furnace door panel 2 is tightly closed, the electric telescopic rod 1 51 is controlled to contract to drive the connecting piece 52 to move toward the furnace door panel 2, so that the connecting piece 52 drives the blocking block 53 to move and insert into the furnace cavity 101, and then the sealing piece 3 55 and the sealing piece 4 21 are used to seal the gap, thereby further improving the sealing of the furnace door and improving the air tightness. When inserting again, the heat insulation layer 54 can be set to reduce heat conduction, thereby reducing the temperature of the furnace door panel 2, which is convenient for later opening.

[0047] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A furnace door airtight structure for a high-temperature heating furnace, comprising: A high-temperature furnace body (1), the high-temperature furnace body (1) being provided with a furnace cavity (101), a furnace door panel (2) for sealing the furnace cavity (101) being rotatably mounted on the high-temperature furnace body (1), a controller (7) being mounted on one side of the high-temperature furnace body (1), and characterized in that it further comprises: a sealing sheet (3) being mounted on the furnace door panel (2), a plurality of external protrusions (31) being disposed on the outer edge of the sealing sheet (3), and a plurality of internal grooves (301) being disposed on the inner side of the sealing sheet (3); A second sealing sheet (4) is installed on the front end surface of the furnace cavity (101), the second sealing sheet (4) is in close contact with the first sealing sheet (3), the outer edge of the second sealing sheet (4) is provided with an outer groove (401) that is plugged into and matched with the outer protrusion (31), and the inner side of the second sealing sheet (4) is provided with an inner protrusion (41) that is plugged into and matched with the inner groove (301); An inner frame assembly (5) is installed on the furnace door panel (2); Two locking components (6) are installed on one side of the high-temperature furnace body (1), and locking grooves (201) cooperating with the two locking components (6) are provided on the furnace door panel (2).

2. The airtight structure of the furnace door of the high temperature heating furnace according to claim 1, characterized in that: The inner frame assembly (5) comprises an electric telescopic rod (51), wherein four electric telescopic rods (51) are provided, and the four electric telescopic rods (51) are installed at the four corners of the furnace door panel (2) and are electrically connected to the controller (7), and the telescopic ends of the four electric telescopic rods (51) are fixedly installed with connecting pieces (52), and a blocking block (53) is installed on the connecting piece (52), and the blocking block (53) passes through a through slot provided in the furnace door panel (2) and is slidably matched with the furnace cavity (101), and a heat insulation layer (54) is provided on the end surface of one end of the blocking block (53) extending into the furnace cavity (101).

3. The airtight structure of the furnace door of the high temperature heating furnace according to claim 2, characterized in that: A sealing sheet three (55) is embedded in the outer wall of one end of the sealing block (53) extending into the furnace chamber (101).

4. The airtight structure of the furnace door of the high temperature heating furnace according to claim 2, characterized in that: A sealing sheet four (21) is embedded in the through groove formed in the furnace door plate (2).

5. The airtight structure of the furnace door of the high temperature heating furnace according to claim 1, characterized in that: The lock assembly (6) comprises an electric telescopic rod (61) which is mounted on the other side of the high-temperature furnace body (1) and is electrically connected to a controller (7), and a plug plate (62) for passing through a lock slot (201) is fixedly mounted on the telescopic end of the electric telescopic rod (61), a T-shaped plate (63) is symmetrically mounted on the plug plate (62), a bidirectional threaded rod (64) is rotatably mounted on the T-shaped plate (63), a locking block (65) is symmetrically threadedly mounted on the bidirectional threaded rod (64), and the locking block (65) is provided with a T-shaped slot which is slidably matched with the T-shaped plate (63).

6. The airtight structure of the furnace door of the high temperature heating furnace according to claim 5, characterized in that: A servo motor (66) is installed on the plug board (62), the servo motor (66) is transmission-connected to the bidirectional threaded rod (64) via a gear, and the servo motor (66) is electrically connected to the controller (7).

Images